Piper salicinum (no known common name) is a plant in the Piperaceae family that is possibly endemic to the Mariana Islands (Guam),[1] although there is some confusion in the literature as to whether it may have been collected from Mexico and Panama.

[3] Two herbarium specimens are known to exist, both collected in 1792 by Czech botanist Thaddäus Haenke on the Malaspina Expedition, which had stopped in both Central America and on Guam.

[5] In the original 1828 description of the species, Czech botanist Carl Borivoj Presl named it Piper salicinum, citing as the authority Philipp Maximillian Opiz, and localized it to Mexico and Panama.

[6] The following year, Presl revised his assessment, naming the species Chavica salicina, and wrote (in Latin): "changing the place of origin to the Mariana Islands, since it does not occur in Mexico, nor in Panama, as indicated by Opiz.

[4] In 1888, the Costa Rican naturalist, Alfaro, copied the original 1828 Pesl description in localizing Piper salicinum to Mexico and Panama.